Astronomers discover 83 supermassive black holes 13 billion light-years away

Agencies
March 15, 2019

Washington, Mar 15: Astronomers have discovered 83 quasars powered by supermassive black holes 13 billion light-years away from the Earth, from a time when the universe was less than 10 per cent of its present age.

“It is remarkable that such massive dense objects were able to form so soon after the Big Bang,” said Michael Strauss, a professor at Princeton University in the US.

“Understanding how black holes can form in the early universe, and just how common they are, is a challenge for our cosmological models,” Strauss said in a statement.

This finding, published in The Astrophysical Journal, increases the number of black holes known at that epoch  considerably, and reveals, for the first time, how common they are early in the universe’s history.

In addition, it provides new insight into the effect of black holes on the physical state of gas in the early universe in its first billion years.

Supermassive black holes, found at the centers of galaxies, can be millions or even billions of times more massive than the Sun.

While they are prevalent today, it is unclear when they first formed, and how many existed in the distant early universe.

A supermassive black hole becomes visible when gas accretes onto it, causing it to shine as a “quasar.” Previous studies have been sensitive only to the very rare, most luminous quasars, and thus the most massive black holes.

The new discoveries probe the population of fainter quasars, powered by black holes with masses comparable to most black holes seen in the present-day universe.

The team used data taken with “Hyper Suprime-Cam” (HSC) instrument, mounted on the Subaru Telescope of the National Astronomical Observatory of Japan, which is located on the summit of Maunakea in Hawaii.

The researchers selected distant quasar candidates from the sensitive HSC survey data.

They then carried out an intensive observational campaign to obtain spectra of those candidates, using three telescopes: the Subaru Telescope; the Gran Telescopio Canarias on the island of La Palma in the Canaries, Spain; and the Gemini South Telescope in Chile.

The survey revealed 83 previously unknown very distant quasars.

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ABDUL AZIZ SHE…
 - 
Saturday, 16 Mar 2019

SUBHAANALLAH

 

 
ALLAH ALMIGHTY CREATED EVERTHING  INCLUDING WHOLE UNIVERSE AND WHAT IS IN IT,

HUMAN BEING CANNOT REACH TO UNDERSTAND IT,  HUMAN LIFE NOT SUFFEICENT TO REACH AND KNOW EVERYTHING.

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News Network
January 1,2020

Pune, Jan 1: Maharashtra Deputy Chief Minister Ajit Pawar and Vanchit Bahujan Aghadi president Prakash Ambedkar paid tributes at the 'Jay Stambh' near here on Wednesday on the 202nd anniversary of Koregaon Bhima battle.

Lakhs of people congregate every year at the 'Jay Stambh' (victory pillar) near Koregaon Bhima village to offer tributes on the anniversary of the battle, which was fought on January 1, 1818 between the British East India Company and the Peshwa faction of the Maratha Confederacy.

Violence broke out during the bicentenary celebrations of the Koregaon Bhima battle on January 1, 2018 in which one person was killed and several others were injured.

Police have made elaborate security arrangements to ensure no untoward incident takes place during the congregation at the victory pillar, an official said.

Talking to reporters after visiting the victory pillar, Pawar said he came to offer tributes on behalf of the people of Maharashtra.

"This pillar has history and every year lakhs of people come here. Some untoward incidents took place two years ago, but the government is taking utmost care and elaborate police bandobast has been made here to ensure that no untoward incident takes place," he said.

Pawar also urged people to visit the war memorial in a peaceful manner.

"I appeal to people to come here and offer their tributes, but maintain peace and do not believe in rumours," the NCP leader said.

Prakash Ambedkar also offered his tributes at the victory pillar.

Pune Police last week issued notices to several people, including right-wing leaders Milind Ekbote and Sambhaji Bhide, and members of Kabir Kala Manch, barring them from entering the district for four days from December 29.

The notices, as part of preventive action, were issued to all those against whom cases were registered in connection with the violence two years ago.

Ekbote was arrested in March 2018 for allegedly instigating and orchestrating the violence around Koregaon Bhima.

Bhide was also booked and named in the FIR, but never arrested.

The police attributed the violence to the Elgar Parishad conclave held here on December 31, 2017, where provocative speeches were allegedly made.

They are also probing the alleged "Maoist link" of some activists to the Elgar Parishad conclave.

Several Dalit groups observe the anniversary of the Koregaon Bhima battle, in which the British defeated the Peshwas of Maharashtra.

The memorial, located at Perne village on Pune- Ahmednagar road, was constructed by the British in the memory of soldiers who died in the battle.

Dalit leaders commemorate the British victory as soldiers from the Mahar community were part of the East India Company's forces.

The Peshwas were Brahmins, and the victory is seen as a symbol of assertiveness by Dalits.

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Agencies
January 16,2020

Claiming that e-commerce giants like Amazon import as much as 80 per cent of the items sold on their platforms, small manufacturers' body has said that their business models do not benefit local industry and are creating jobs of delivery boys only.

"Neither manufacturers nor traders are getting any benefit from the business models of Amazon and Flipkart because they largely import their products from China and Korea and sell here. Nearly 80 per cent of their products are imported," said Anil Bhardwaj, Secretary General, Federation of Indian Micro and Small & Medium Enterprises (FISME).

Bhardwaj said that the global e-commerce players generally source and sell products through their own preferred suppliers and as a result a large number of local manufacturers and traders get crowded out.

He listed out deep discounting and buying products from preferred companies as unfair practices.

"Even if they buy products from local suppliers the commission charged is very high," Bhardwaj said adding that the issues related to unfair practices have been raised with Commerce Ministry on multiple occasions.

FISME maintains that the technology-driven retail is way forward and one cannot be oblivious of the benefits it brings to consumers but at the same time the local industry can also not be ignored given its role in job creation.

"If both traders and local manufacturers are crowded out then how would the local industry survive and employment be generated?" asked Bhardwaj.

As Amazon Founder and CEO Jeff Bezos is currently on his three-day visit to India, the local traders are up in arms against the "unfair" trade practices of the tech giant. Delhi-based Confederation of All India Traders (CAIT) has launched a countrywide protest against the company and has organised protests across 300 cities.

In a setback to Amazon and Walmart-backed Flipkart, the fair market watchdog Competition Commission of India (CCI) has ordered probe into the business operations of both the companies on multiple counts including deep-discounts and exclusive tie-up with preferred sellers.

"For the first time some concrete step has been taken against Amazon and Flipkart who are continuously violating the FDI policy in indulging in a vicious racket of controlling and monopolising not only the e-commerce but even the retail trade as well," CAIT National Secretary General Praveen Khandelwal said after the CCI order.

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News Network
January 12,2020

Kolkata, Jan 12: Prime Minister Narendra Modi on Sunday said a section of the youth is being misguided about the Citizenship Amendment Act and asserted that it will not take away anybody's citizenship.

Modi also said whoever has faith in India and believes in its Constitution can become an Indian citizen.

“There are a lot of questions among the youth about the new citizenship law, and some are being misled by rumours around it... it is our duty to clear their doubts,” the PM said during an address at Belur Math in Howrah district.

“I want to make this clear again that the CAA is not about taking away anybody's citizenship, but about granting citizenship,” he added.

Modi said that some people with political interests are deliberately spreading rumours about the new citizenship law.

Lauding the youth for speaking against religious persecution of minorities, the prime minister said the energy of the country's young will form the basis of change in the 21st century. The PM is on a two-day visit to the city.

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